body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif;
  font-size: 15px;
  color: #1a1a1a;
}
